The 6 best GPS fitness watches in 2023, according to a competitive athlete

The best fitness watches, according to a competitive marathon runner (Getty). There was a time when the world’s best athletes timed their runs with palm-sized stopwatches, usually kept by a tracksuit-clad coach standing to the side. Back then, pace per kilometer and real-time running speed, not to mention vertical oscillation and blood oxygen levels, were forcibly left to the imagination. But in this age of data, timing devices have evolved far beyond the $10 plastic chunks we’d fish out of the bottom of a cereal box of, sorry, Tony the…

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